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2 years ago

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To those who are struggling with geometry or any maths class download “Gauthmath”. it has actual tutors who will give answers an

d step-by-step explanations. In case if anyone downloads it, can you use my code when signing up? The code is: KDUXHL

1 answer:

Alekssandra [29.7K]2 years ago

4 0

Answer:

Thanks this can come in handy for me

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Pyramids and cones (finding surface area). Please help!

zimovet [89]

For the first one

notice, the pyramid is just 4 triangles and one square, stacked up to each other at the edges

now, for the first one, you have a square 4x4 and four triangles or base 4 and height of 6

bear in mind, the pyramids are called "regular pyramids" because their base is a regular polygon, meaning, a polygon with all equal sides, in this case a quadrilteral, or a square

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now for the second one

you have the height of the pyramid, but not the slant-height, which will be the height of the triangular face

thus... check the picture below, using the pythagorean theorem, you can just get the height of the triangular face then

now, the base of the triangles are all 22
and the base of the pyramid is a 22x22 square

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now, for the third one

same as the first one really, you have both, the base and slant-height, which will be the height of the triangular face

so, four triangles with a base of 6 and a height of 9, and a square on the base of 6x6

so... get the area of all four triangles, and the squarish base, sum them up, and that's the surface area of the pyramid

7 0

3 years ago

What is the slope of the line that passes through the points (5,−4) and (7, -4) ?Write your answer in simplest form.

mihalych1998 [28]

Answer:

Undefined

Step-by-step explanation:

$\boxed{slope = \frac{y1 - y2}{x1 - x2} }$

☆ (x₁, y₁) is the first coordinate and (x₂, y₂) is the second coordinate.

Slope of the line

$=\frac{ - 4 - ( - 4)}{7 - 5} \\ =\frac{ - 4 + 4}{2} \\ = \frac{0}{2} \\ (undefined)$

Thus, the slope of the line is undefined.

(Since 2 cannot be divided by zero)

Notice that the two coordinates have the same y- coordinate of -4. This means that the line is a vertical line. Vertical lines have undefined slopes.

7 0

2 years ago

Suppose h(t)=-5t^2+10t+3 is the height of a diver above the water(in meters), t seconds after the diver leaves the springboard.

statuscvo [17]

Answer:

See Below:

Step-by-step explanation:

Hit Water:

He hits the water when his height, h(t), is 0 meters above water.

0 = $-5t^2+10t+3\\$

This is no factorable so we use the quadratic formula.

(-b±√(b²-4ac))/2a

(-10±√(10²-4*-5*3))/2*-5

(-10±√(100+60))/-10

(-10±√160)/-10

(-10±√16*10)/-10

(-10±4√10)/-10

(-10±4√10)/-10 Seperate to two equations

(-10+ 4√10)/-10 and (-10- 4√10)/-10

(-10+12.65)/-10 (-10-12.65)/-10

-.265 Not Solution 2.265 Seconds

Becasue there is no negative time

The diver hits the water at 2.265 seconds

For when he is at the same height as the spring board, we need to find the height of the spring board, and we do that by substituting 0 for t because we need the height 0 seconds after he jumps.

h(0) = -5*0^2 +10*0 +3

h(0) = 3 The height of the spring board is 3 so we need to know when he is at 3 meters again.

3= -5t^2 + 10t + 3 Subtract 3 from both sides

0= -5t^2 +10t

0= -5(t^2-2t) Factor out -5 and divide both sides by -5

0= t^2-2t

0= t(t-2) Factor out t.

Solve.

t= 0 t-2=0

t= 2

He will be at the same height as the spring board at t= 2 seconds

5 0

3 years ago

John gives 2/3 of his pencils, P, to Roy and then gives 1/4 of the pencils that he has left to Maria. In terms of P, how many pe

valkas [14]

Answer:

C. 1/4

Step-by-step explanation:

Since John has given 2/3 of his pencils to Roy, he has 1/3 of the total left. To find 1/4 of 1/3, multiply the numbers. 1/4(1/3) = 1/12. This means that he gave 1/12 of the beginning total to Maria. 2/3 can also be written as 8/12, and 1 can be written as 12/12. 12/12 - 8/12 = 4/12, and then 4/12 - 1/12 = 3/12. 3/12 can be simplified into 1/4

4 0

2 years ago

Read 2 more answers

Simplify: -7x6 + 5x6

Phantasy [73]

Answer:

-2x12

Step-by-step explanation:

I don't know if this will help but at least I tried

4 0

3 years ago

Read 2 more answers